Looking for a quick way to say thank you to a colleague? Try sending a thank you ecard. Thank you ecards are a wonderful way to show you care. Select from lots of ecards available online. Whether you are looking for humorous or thoughtful thank you ecards you are sure to find some thank you e-cards that meet your needs. The recipient will be pleasantly surprised, especially if they receive the ecard while they are at work and wishing they weren’t!